Over the years, power cords become frayed, the electrolytic capacitors dry out, and the potted bias rectifier modules give up the ghost. Sections on operation theory, field maintenance, storage and demolition to prevent enemy use, part list. Feb, 2016 collins r 388 receiver attached to cb magnetic mount antenna receiving ham band. I am attempting to compile info that will help identify what r388urr receivers were used by the us navy. Solid state 6bf5 home of the collins radio association.
Aug 25, 2010 the r 388 51j251j3 really requires a higher impedance antenna than that which is supplied by a 50 ohm coaxial cable. If you have a photo of an r388 actually being used in navy service, please let me know. I am restoring the hall purely as a nostalgic thing and as a excuse to put up an ant. Rockwell collins 51s1 manuals manuals and user guides for rockwell collins 51s1. The receiver was designed for a 300 ohm balanced feed from the.
The r38851j251j3 really requires a higher impedance antenna than that which is supplied by a 50 ohm coaxial cable. I joined a yahoo group for collins 51j, r 388, and r390 receiver aficionados to gather more information. The only thing i have found is the drawing below showing an r388 used as a. For sale is reprint of tm 11854 to 1635r3885 r388 radio receiver. The collins 516f2 is a heavyduty power supply for the kwm22a transceivers and the 32s1,2,3 series of collins transmitters. I was playing around with this unit a bit more this afternoon and i think it has a receive problem. Such documents include, but are not limited to, product manuals, schematics, test methods, service bulletins, advertising materials, product catalogs, maintenance.
Our goal is to make these manuals available via online download and, eventually, via cdrom for all cca members. Please send me email with additions, corrections, more info, etc. I mentioned that the collins 51j series and r388 receivers were insensitive. I can only receive about 3 am broadcast stations and there is a loud cyclical hum near every. These manuals are available for download and free of charge. The collins 75s3a has 14 additional 200 khz positions and an additional knob above the band select. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. It was known as the r388 and was used in multiple receiver diversity rtty installations. The collins 516f2 power supply is used to power the collins 32s transmitters and the kwm2 transceiver. The other two were swaps with the last one being a pristine late 62 navy contract unit that is, when the r390s were too expensive, the navy contracted collins to make the r 388 in 1962 as a lower cost alternative.
The editor and publisher assume no responsibility for the accuracy or safety of. This site helps you to save the earth from electronic waste. A collins sline troubleshooting and repair adventure. If you want to checkout the service bulletins for the 75a2 checkout the collins collectors association website. Among the first products was the 820 series of am transmitters, designed to meet new fcc regulations regarding the need to contain harmonics and spurious emissions inside. Collins 51j4 service manual download, schematics, eeprom. Noise limiters and audio amplifiers 75a3 alignment adjustments dial cord replacement. Collins 30k transmitters at this point, 2 30k1s and a 30k2 have followed me home. There is a wealth of other collins information on the cca website and much more to come. The receiver was designed for a 300 ohm balanced feed from the antenna. Hi john, i have scanned in a 75a2 schematic and will send it to you in a separate email. View and download collins 75a3 instruction book online.
Sections on operation theory, field maintenance, storage and demolition to prevent enemy use. Visit us online for more information or to download service manuals today. Treetop circuits connecting an r38851j receiver with a. Note that this is a work in process with progress being made. Simplified schematic of 75a3 rf circuits 75a3 receiver, schematic diagram 148c1 nbfm adaptor schematic diagram. Collins r388 radio receiver army manual r388urr glendale. Tm11854 or to 1635r3885 manual original departments of army and navy issue april 1952. Tm11854 or to 1635r 388 5 manual original departments of army and navy issue april 1952. Band change collins 51j4 receiver covers the frequency range of 0. All you need is a piece of rg58 coax or similar with an rca plug on one end and a pl259 on the other to connect this to the antenna connection on the r38851j. Collins r388 service manual download, schematics, eeprom. We have 1 rockwell collins 51s1 manual available for free pdf download. Collins 475d1 dme ramp test set instruction manual. This is a page devoted to the collins r388 51j3 and r388a 51j4 receivers.
If your transmitter is already on the high end of the am broadcast band, you wont have to do much to get on 160. This has operating and service elements in it with foldout schematic title page is partially ripped. For easier initial frequency programming, copy and paste, and importing frequency files from previous radios you may want to consider using the chirp programming software found below. Collins mechanical filter, functional diagram detector and avc circuits. Complete 51j2 manual, scan of xerox 200 dpi, pdf, 6mb 51j2 schematic 300. I am attempting to compile info that will help identify what r 388 urr receivers were used by the us navy. If you have a photo of an r 388 actually being used in navy service, please let me know. Collins 476d1 distortion analyzermonitor instruction manual. Collins reduced the neutralization problem by grounding the screen in the 830 and 831 series. Complete 51j2 manual, scan of xerox 200 dpi, pdf, 6mb 51j2 schematic 300 dpi, pdf, 350kb later 51j2 receiver with 70e15 pto. The top cover panel is very bright and has a schematic under it. The 388 was a thought as to perhaps a better radio quality wise than the halli and who could argue with collins or us.
The antenna relay in the kwm2 then connects the r38851j to the antenna when receiving, but not when transmitting. In 1964, collins moved the broadcast division from cedar rapids to dallas, tx. Quoting their tm manuals, radio receiver r388aurr is a communications. A collins sline troubleshooting and repair adventure gary white w5gw in october 2011 i obtained a collins sline station from a friend and fellow ham in san antonio k5jwk gary. Service manuals, schematics, eproms for electrical technicians. Circuits affected by band changes are the rf amplifier grid, first, second, and third mixer grids, crystal selector, and crystal harmonic tuning circuits. This is what old time radio operators like to refer to as a boat anchor a big old tube radio that if good for no other purpose is heavy enough to anchor a boat this one is the collins r388, a. Collins 75a1 receiver service manual download, schematics. Designed to replace 75s series 6bf5 audio amplifier tube directly. Over the years, power cords become frayed, the electrolytic capacitors dry out. It was a winged emblem 32s1 transmitter, 75s1 receiver, and a 516f2 power supply. All you need is a piece of rg58 coax or similar with an rca plug on one end and a pl259 on the other to connect this to the antenna connection on the r. Why do collins serial numbers and contract numbers and models seem to be.
When a 50 ohm coaxial fed antenna is connected there can be anywhere from about a 6 db loss in signal strength to over a 20 db loss in signal strength. Collins 456c1, 288a1, 278h1, 614j1, 614k1 selective calling system instruction manual. The program does come with a fairly extensive library but in my opinion the quality leaves a lot to be desired. Softwaredefined radio for engineers analog devices. No bandwidth switch under bfopitch control, could be upgraded to 51j4 with 354a1 collins mechanical filter conversion kit.
The collins 75s3a has 14 additional 200 khz positions and an additional knob above the band select switch. I am now accepting new manuals for inclusion in this archive. Select picture or schematic to display from thumbnails on the right and click for download. I am attempting to compile info that will help identify what r388urr. This has operating and service elements in it with foldout schematic title page is partially ripped, otherwise looks ok. Collins 516f2 power supply collins radio company source document. Before you get started, be sure to test the transmitter on its original frequency by running it into a dummy load. I can only receive about 3 am broadcast stations and there is a loud cyclical hum near every 100kc mark. This is a page devoted to the collins r 388 51j3 and r388a 51j4 receivers. The stock programming software will allow access to all features and options such as.1477 589 1228 1534 242 578 835 264 1070 1325 607 1265 730 368 1145 1188 1363 545 421 19 208 1545 359 556 1252 1455 540 1482 970 1267 1258 601 807 159 516 1259 490